Diagnostic biomarkers differentiating metastatic melanoma patients from healthy controls identified by an integrated MALDI-TOF mass spectrometry/bioinformatic approach
The prognosis of advanced metastatic melanoma (American Joint Committee on Cancer (AJCC) stage IV) remains dismal with a 5‐year survival rate of 6–18%. In the present study, an integrated MALDI mass spectrometric approach combined with artificial neural networks (ANNs) analysis and modeling has been...
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| Veröffentlicht in: | Proteomics. Clinical applications 2007-06, Vol.1 (6), p.605-620 |
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| creator | Matharoo-Ball, Balwir Ratcliffe, Lucy Lancashire, Lee Ugurel, Selma Miles, Amanda K. Weston, Daniel J. Rees, Robert Schadendorf, Dirk Ball, Graham Creaser, Colin S. |
| description | The prognosis of advanced metastatic melanoma (American Joint Committee on Cancer (AJCC) stage IV) remains dismal with a 5‐year survival rate of 6–18%. In the present study, an integrated MALDI mass spectrometric approach combined with artificial neural networks (ANNs) analysis and modeling has been used for the identification of biomarker ions in serum from stage IV melanoma patients allowing the discrimination of metastatic disease from healthy status with high specificities of 92% for protein ions and 100% for peptide biomarkers. Our ANNs model also correctly classified 98% of a blind validation set of AJCC stage I melanoma samples as nonstage IV samples, emphasizing the power of the newly defined biomarkers to identify patients with late‐stage metastatic melanoma. Sequence analysis identified peptides derived from metastasis‐associated proteins; alpha 1‐acid glycoprotein precursor‐1/2 (AAG‐1/2) and complement C3 component precursor‐1 (CCCP‐1). Furthermore, quantitation of serum AAG by an immunoassay showed a significant (p |
| doi_str_mv | 10.1002/prca.200700022 |
| format | Article |
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In the present study, an integrated MALDI mass spectrometric approach combined with artificial neural networks (ANNs) analysis and modeling has been used for the identification of biomarker ions in serum from stage IV melanoma patients allowing the discrimination of metastatic disease from healthy status with high specificities of 92% for protein ions and 100% for peptide biomarkers. Our ANNs model also correctly classified 98% of a blind validation set of AJCC stage I melanoma samples as nonstage IV samples, emphasizing the power of the newly defined biomarkers to identify patients with late‐stage metastatic melanoma. Sequence analysis identified peptides derived from metastasis‐associated proteins; alpha 1‐acid glycoprotein precursor‐1/2 (AAG‐1/2) and complement C3 component precursor‐1 (CCCP‐1). Furthermore, quantitation of serum AAG by an immunoassay showed a significant (p<0.001) increase in AAG serum concentration in stage IV patients in comparison with healthy volunteers; moreover; the quantity of AAG plotted against MALDI‐MS peak intensity classified the groups into two distinct clusters. Ongoing studies of other disease stages will provide evidence whether our strategy is sufficiently robust to give rise to stage‐specific protein/peptide signatures in melanoma.</description><identifier>ISSN: 1862-8346</identifier><identifier>EISSN: 1862-8354</identifier><identifier>DOI: 10.1002/prca.200700022</identifier><identifier>PMID: 21136712</identifier><language>eng</language><publisher>Weinheim: WILEY-VCH Verlag</publisher><subject>Biomarkers ; MALDI ; Mass spectrometry ; Melanoma</subject><ispartof>Proteomics. Clinical applications, 2007-06, Vol.1 (6), p.605-620</ispartof><rights>Copyright © 2007 WILEY‐VCH Verlag GmbH & Co. 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Sequence analysis identified peptides derived from metastasis‐associated proteins; alpha 1‐acid glycoprotein precursor‐1/2 (AAG‐1/2) and complement C3 component precursor‐1 (CCCP‐1). Furthermore, quantitation of serum AAG by an immunoassay showed a significant (p<0.001) increase in AAG serum concentration in stage IV patients in comparison with healthy volunteers; moreover; the quantity of AAG plotted against MALDI‐MS peak intensity classified the groups into two distinct clusters. Ongoing studies of other disease stages will provide evidence whether our strategy is sufficiently robust to give rise to stage‐specific protein/peptide signatures in melanoma.</description><subject>Biomarkers</subject><subject>MALDI</subject><subject>Mass spectrometry</subject><subject>Melanoma</subject><issn>1862-8346</issn><issn>1862-8354</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqFkUFv1DAQhSMEoqVw5Yh8glO2tuPEyXG1paXqtkWlCImLZXvHu4YkDrZXbX4Rf7MO2644wcX2WN97Y8_LsrcEzwjG9HjwWs4oxhynij7LDkld0bwuSvZ8f2bVQfYqhB8Yl4xy_DI7oIQUFSf0MPt9YuW6dyFajZR1nfQ_wQe0ssaAhz5aGW2_Rh1EGaKcqA5a2ScQDalMREDGuw5tQLZxMyLt-uhdG5BdTXJjYYXUiGSPbB9h7WVMF5fz5cl5fnt9ijoZAgoD6CRKTfx4nF5he-N896ebHAbvpN68zl4Y2QZ487gfZV9PP94uPuXL67PzxXyZa0YKmkNT16RkiiipgCkmpapUyQ3BaloI5QU3WNeaUsqModzwumlwwanBwLUqjrIPO9_U9tcWQhSdDRra9Gdw2yBqUpW0IaxM5Pt_khQzwooKJ3C2A7V3IXgwYvA2DXoUBIspRDGFKPYhJsG7R-et6mC1x59SS0CzA-5sC-N_7MTnm8X8b_N8p7Uhwv1em3IXVRpOKb5dnYnm-9VFWeIb8aV4AKxAvEM</recordid><startdate>20070601</startdate><enddate>20070601</enddate><creator>Matharoo-Ball, Balwir</creator><creator>Ratcliffe, Lucy</creator><creator>Lancashire, Lee</creator><creator>Ugurel, Selma</creator><creator>Miles, Amanda K.</creator><creator>Weston, Daniel J.</creator><creator>Rees, Robert</creator><creator>Schadendorf, Dirk</creator><creator>Ball, Graham</creator><creator>Creaser, Colin S.</creator><general>WILEY-VCH Verlag</general><general>WILEY‐VCH Verlag</general><scope>BSCLL</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>7X8</scope></search><sort><creationdate>20070601</creationdate><title>Diagnostic biomarkers differentiating metastatic melanoma patients from healthy controls identified by an integrated MALDI-TOF mass spectrometry/bioinformatic approach</title><author>Matharoo-Ball, Balwir ; Ratcliffe, Lucy ; Lancashire, Lee ; Ugurel, Selma ; Miles, Amanda K. ; Weston, Daniel J. ; Rees, Robert ; Schadendorf, Dirk ; Ball, Graham ; Creaser, Colin S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4132-e988154b1babe4b4aab6b57f10b7f1012737f0c8c2224ff27f78990372f0e7cb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Biomarkers</topic><topic>MALDI</topic><topic>Mass spectrometry</topic><topic>Melanoma</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Matharoo-Ball, Balwir</creatorcontrib><creatorcontrib>Ratcliffe, Lucy</creatorcontrib><creatorcontrib>Lancashire, Lee</creatorcontrib><creatorcontrib>Ugurel, Selma</creatorcontrib><creatorcontrib>Miles, Amanda K.</creatorcontrib><creatorcontrib>Weston, Daniel J.</creatorcontrib><creatorcontrib>Rees, Robert</creatorcontrib><creatorcontrib>Schadendorf, Dirk</creatorcontrib><creatorcontrib>Ball, Graham</creatorcontrib><creatorcontrib>Creaser, Colin S.</creatorcontrib><collection>Istex</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Proteomics. 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| subjects | Biomarkers MALDI Mass spectrometry Melanoma |
| title | Diagnostic biomarkers differentiating metastatic melanoma patients from healthy controls identified by an integrated MALDI-TOF mass spectrometry/bioinformatic approach |
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